59results about How to "Good antioxidant" patented technology

The invention discloses an unfired magnesia-alumina spinel brick. The unfired magnesia-alumina spinel brick comprises the following chemical components by mass: 80 to 90% of fused magnesia, 5 to 15% of magnesium-rich magnesia-alumina spinel, 1 to 3% of micro alumina powder, 1 to 3% of aluminum-silicon alloy powder and 0.2 to 0.6% of B4C. The chemical components are bonded together by using 3.5 to 5 wt% of an added binder. The content of magnesium oxide in the fused magnesia is greater than 98 wt%, and the content of magnesium oxide in the magnesium-rich magnesia-alumina spinel is greater than 30 wt%. The unfired magnesia-alumina spinel brick provided by the invention has excellent slag reaction resistance, slag penetration resistance, anti-stripping performance, anti-scouring performance, resistance to oxidation and a long service life, does not include the harmful element--chromium, avoids pollution and harm to human beings and the environment, needs low production cost and has a wide application scope.

The present invention relates to a preparation method for a fresh ginseng extract, and an application of the fresh ginseng extract in cosmetics. The method is characterized in that fresh ginseng is adopted as a raw material, a 0-99% ethanol flash extraction device is adopted to extract, ethanol is recovered from the filtered filtrate at a temperature of below 40 DEG C, and freeze drying is performed to prepare the extract or the dry powder. According to the present invention, the fresh ginseng extract contains high adenosine and high L-pyroglutamic acid, has specific energy substances of fresh plants, and contains high contents of effective skin care saponin such as Rg1, Rg2 and Rb1, total amino acids and adenosine compared with white ginseng, and the 80% dihydroquercetin-containing dahurian larch root extract is added, such that the fresh ginseng extract has effects of significant tyrosinase inhibition activity, skin oxidation resistance, skin aging resistance and skin moisturizing effect, can be used for preparing cosmetics with effects of whitening, moisturizing and aging resistance, and can be adopted as a cosmetic nature additive so as to provide a nutrition effect. The extract combination, the extraction method and the extract solvent are not limited to the combination, the extraction method and the extract solvent mentioned by the experimental examples and the embodiments.

This invention is a alumina-chrome carborundum brick, and the composition comprises bauxite chamotte 55-75%, corundum 0-15%, chromium hemitrioxide 1-10%, chrome corundum 0-20%, carbon silicon 5-20% and clay 2-10%, and the broke pulp 1-5% as adhesive agent; the ratio of particles and powder of bauxite chamotte, corundum and carbon silicon is 3-4:1-2; the finished product of the refractory brick comprises Al2O3 60-80%, Ci2031-10%, SiC 5-15%. This refractory brick has good performance of oxidation resistance, strong iron erosion resistance, and the cost is proper and is suitable for the iron water pot, tin fish pot and iron stove.

The invention discloses a CNT-containing lithium ion battery waterborne positive electrode paste and a preparation method therefor. The CNT-containing lithium ion battery waterborne positive electrode paste is prepared from the following components in parts by weight: 60-70 parts of lithium iron phosphate, 0.8-3 parts of conductive agent, 1-4 parts of waterborne binder, 25-30 parts of carbon nanotube dispersion liquid and deionized water; the sum of the parts by weight of lithium iron phosphate, conductive agent, waterborne binder and carbon nanotube dispersion liquid are 100 parts; and due to the usage of the deionized water, 50-60% of solid content in the waterborne positive electrode paste is obtained. According to the CNT-containing lithium ion battery waterborne positive electrode paste and the preparation method therefor, the deionized water is used as solvent for improving the fluidity of the (carbon nanotube) CNT, lowering the CNT viscosity and improving the CNT dispersion, so that the paste with improved viscosity, thinness and solid content is obtained.

The invention provides a high-power crimping type IGBT encapsulation module fixture comprising an insulation supporting rod arranged vertically, and a lower end bearing flange component set, a lower end drainage bar, a lower water cooling component set, a middle drainage bar, an upper water cooling component set, an upper end drainage bar and an upper end fixture flange component set which are arranged from bottom to top sequentially and horizontally. Two sides of the upper and lower water cooling component sets are provided with capacitor components and damping resistor components, and the other two sides are provided with radiator waterway components, short circuit plates, drive plates and guide wire groove components; the upper and lower water cooling component sets comprise water cooling radiators which are parallel to each other vertically and which clamp a crimping type IGBT encapsulation module, and nickel is planted on the surfaces of the water cooling radiators. The fixture is simpler and more compacted in whole structure, more convenient to manufacture and assemble and more reasonable in layout and has higher reliability and better heat radiating performance.

The invention provides herbal mixed polyamide fiber, and belongs to the field of textile fibers. The polyamide fiber comprises the following formulating raw materials in parts by weight: 100-120 partsof polyamide slice, 0.5-1 part of a dispersant, 0.2-0.8 part of zinc stearate, 1.5-2 parts of SanstabTPO330 and 15-25 parts of functional fusion masterbatches. The herbal mixed polyamide fiber prepared by a preparation method provided by the invention has the advantages of good antioxidation and heat resistance, and under the condition of 150 DEG C thermal oxidation treatment, the yellowing gradeis higher than 4.0. During preparation of the herbal mixed polyamide fiber prepared by the preparation method provided by the invention, a herbal plant-sourced component is added, and the prepared herbal mixed polyamide fiber has the functionality of a plant extract itself, has moisture-absorbing and antistatic effects, and also has the characteristics of antioxidation, light resistance, heat resistance and long service life.

The invention discloses a multilayer anisotropic puncture type conductive fabric adhesive and an FPC reinforcing shielding structure using the same, wherein the conductive fabric adhesive comprises anupper conductive adhesive layer, a lower conductive adhesive layer and an ultra-thin conductive fabric layer formed between the upper conductive adhesive layer and the lower conductive adhesive layer; the thickness of the upper conductive adhesive layer is 15-25[mu]m, and the thickness of the lower conductive adhesive layer is 35-45[mu]m; the upper and lower conductive adhesive layers comprise metal conductive particles, wherein the metal conductive particles are at least two kinds of a tree branch shape, a chain shape, a needle shape, a slice shape and a sphere shape, and particle sizes of the metal conductive particles are 40-100[mu]m; and the thickness of the ultra-thin conductive fabric layer is 5-15[mu]m. According to the adhesive, the characteristics of an extremely good grounding effect and an electromagnetic shielding effect, high electrical property, excellent bonding strength, excellent tin soldering property, excellent reliability, excellent flame resistance and the like can be achieved by combining with a reinforcing material and an EMI film under the condition that the FPC does not have a reserved grounding hole, and in addition, the production process can be reduced,and the production cost can be lowered.

The invention discloses cable rubber which is prepared from the following raw materials in parts by weight: 20-35 parts of silicone rubber, 5-15 parts of a reinforcing agent, 3-5 parts of dibutyl phthalate, 15-25 parts of ethylene propylene rubber, 2-5 parts of nano-zinc oxide, 3-8 parts of 2-mercapto imidazoline, 13-17 parts of isoprene rubber, 5-8 parts of heat conductive padding, 10-15 parts of emulsion polymerized styrene-butadiene rubber, 8-12 parts of acetylene carbon black, 3-7 parts of a vulcanizing agent, 13-21 parts of zinc borate, 2-4 parts of coumarone resin and 13-16 parts of naphthenic oil. The cable rubber has the following benefits: the cable rubber has excellent anti-corrosion and antioxidant effects and improves the insulating property.

The invention discloses a preparation method of a boron-modified lubricating oil ashless dispersant. The method is characterized by comprising the following steps of: heating an ashless dispersant to 85-95 DEG C, and adding a boronizing agent and a mixed solvent under the condition of continuously introducing an inert gas, wherein the molar ratio of the ashless dispersant to the boronizing agent is 1:(1-3), and the dosage of the mixed solvent is 0.5-3 times the weight of the boronizing agent; and performing backflow boronizing reaction for 1-4 hours, heating to 120-160 DEG C, reacting for 2-4 hours, and recovering the solvent to obtain the boron-modified lubricating oil ashless dispersant. Through the invention, no boric acid settlement happens after the product is generated; the boron-modified lubricating oil ashless dispersant has high-temperature resistance, good oxidation resistance, low micelle concentration, good dispersing performance and excellent wear resistance under the extreme pressure condition; and moreover, the technology is simple, special equipment is not required in the production process, the production cost is low, and the solvent used in the boronizing process can be recovered to realize recycling.

The invention relates to a thermoplastic magnetic composite material and a preparation method thereof. The preparation method includes the steps of reacting carbonyl iron powder, a first surface modifier, an alcohol solvent, water, ammonia water and a silicon source precursor to prepare coating silica carbonyl iron powder; then taking the coating silica carbonyl iron powder, the thermoplastic resin, the second surface modifier and a lubricant as raw materials; mixing, pelleting and injection molding the raw material components to obtain the carbonyl iron/resin composite material. The composite material exhibits high electromagnetic characteristics in the 1.0 to 3.9 GHz band and can be widely used in electronics such as antennas, feeder networks, and microwave devices.

The invention relates to a preparation method of anti-oxidative natural gas engine lubricating oil and belongs to the technical field of lubricating oil. The preparation method comprises the steps that 100-150 parts of base oil, 5-10 parts of epoxidized soybean oil and 3-5 parts of alpha-olefin oxide are taken and mixed uniformly, then heating, reflux and heat preservation are performed, and standing is performed for cooling; 5-10 parts of hydrogenated castor oil, 1-2 parts of succinic acid dibutyl, 0.3-1 part of sorbitan mo-nooleate, 0.4-0.6 part of sulfurized calcium alkyl phenate, 0.2-0.4 part of coconut oil fatty acid diethanolamide and 2-6 parts of a lubricating oil additive are added into the mixture prepared in the step 1, and uniform mixing, heating, reflux, heat preservation and standing for cooling are performed to obtain the lubricating oil. The lubricating oil applied to natural gas engines has better oxidation resistance and nitrification resistance.

The invention discloses a preparation method of a protective coating material for a zirconium alloy cladding pipe. Specifically, the preparation method comprises the following steps: mixing a main material for a protective coating, water and polyvinyl alcohol to obtain a mixed material; carrying out two types of post-treatment on the mixed material to obtain an agglomerated powdery protective coating raw material for the zirconium alloy cladding pipe or a suspension-shaped protective coating raw material for the zirconium alloy cladding pipe; taking the zirconium alloy cladding pipe and carrying out sand spraying treatment on an outer wall of the zirconium alloy cladding pipe; spraying the agglomerated powdery protective coating raw material for the zirconium alloy cladding pipe or the suspension-shaped protective coating raw material for the zirconium alloy cladding pipe on the outer wall of the zirconium alloy cladding pipe subjected to blast sanding treatment by adopting a thermal spraying technology, so as to form the protective coating material for the zirconium alloy cladding pipe on the outer wall of the zirconium alloy cladding pipe. According to the preparation method of the protective coating material for the zirconium alloy cladding pipe, provided by the invention, a very good protective coating is formed on the outer wall of the zirconium alloy cladding pipe, so that the anti-oxidization performance of the zirconium alloy cladding pipe is improved.

The invention discloses a special-shaped metal particle electric-conduction adhesive film, which comprises an electric-conduction adhesive layer and a release film layer or a carrier film layer adhered to the lower surface of the electric-conduction adhesive layer, wherein the thickness of the electric-conduction adhesive layer is 15-60 [mu]m, the electric-conduction adhesive layer comprises metalelectric-conduction particles and an adhesive resin according to a weight ratio of 1:1-5:1, and the metal electric-conduction particles comprise at least two selected from dendritic metal powder, needle-like metal powder, flaky metal powder and spherical metal powder, and have a particle size of 2-22 [mu]m. According to the present invention, the special-shaped metal particle electric-conductionadhesive film has characteristics of excellent fluidity during pressing, good electrical property, high shielding performance, good bonding strength, less transmission loss, high transmission quality,good reliability and the like, has good grounding effect compared to the general electric-conduction films, and further has wide market application prospects.

The invention relates to the technical field of printing gold stamping, in particular to a non-alumite gold stamping product and a preparation process thereof. The preparation process of the non-alumite gold stamping product comprises the following steps that A, a combination plate is prepared, specifically, a gold stamping plate and a laser nickel plate with graphics and text information being carved are subjected to alignment and laminating through high temperature resistant glue to prepare the combination plate; B, paper is coated, specifically, the position, needing gold stamping, of the paper is coated with thermoplastic light oil or high-reflectivity coating to prepare a coating layer; and C, coating and gold stamping are conducted, specifically, the combination plate prepared in the step A is subjected to lock up and put on a machine, the coating layer prepared in the step B is pressed and subjected to gold stamping, and the non-alumite gold stamping product is prepared. The graphics and text information of the laser nickel plate can be printed on the paper in a hot stamping mode under the condition of no alumite medium, various laser effects can be shown on the paper through one procedure, the production cost is low, durability is good, the customization period is short, safety and environmental friendliness are achieved, and the multi-batch and small-amount production requirements are met.

The invention discloses an acid rain sampling, measuring and analyzing instrument which comprises metal shells. The metal shells are laminated and treated. A method for laminating and treating the metal shells includes steps of 1), sequentially inputting, by weight, 1-2 parts of dodecyl trimethyl ammonium bromide, 2.5 parts of aluminum oxide, 1.6 parts of dibutyl phthalate and 0.9 part of alum into 50 parts of deionized water and uniformly stirring the dodecyl trimethyl ammonium bromide, the aluminum oxide, the dibutyl phthalate, the alum and the deionized water to obtain first mixtures; 2), sequentially inputting, by weight, 15.5 parts of styrene, 9.9 parts of hydroxy propyl methylcelluloses, 1.8 parts of alkylphenol ethoxylate and 0.9 part of potassium tetraborate into the first mixtures, and continuing to stir the styrene, the hydroxy propyl methylcelluloses, the alkylphenol ethoxylate, the potassium tetraborate and the first mixtures until the styrene, the hydroxy propyl methylcelluloses, the alkylphenol ethoxylate, the potassium tetraborate and the first mixtures are sufficiently uniformly mixed with one another to obtain laminating and treating liquid; 3), placing the metal shells in the laminating and treating liquid, impregnating the metal shells in the laminating and treating liquid, taking the metal shells out of the laminating and treating liquid and then drying themetal shells. The acid rain sampling, measuring and analyzing instrument has the advantages that protective films cover the surfaces of the metal shells of the acid rain sampling, measuring and analyzing instrument, and accordingly the acid rain sampling, measuring and analyzing instrument is good in performance and high in surface smoothness.

The invention discloses a tin, lead and indium-based solder alloy for a photovoltaic solder strip. The tin, lead and indium-based solder alloy is prepared from the following components in percent by mass: 58-63% of Sn, 33-40% of Pb, 1-3% of In and 0.1-1% of Ga, totaling 100%. The alloy has a relatively low melting point. A preparation method comprises the following steps: S1, weighing tin particles, lead particles, indium particles and gallium particles the purities of which are 99.99% separately, and meeting the following condition that the components in the alloy comprise, in percent by mass, 58-63% of Sn, 33-40% of Pb, 1-3% of In and 0.1-1% of Ga; S2, ultrasonically cleaning the raw materials weighed in the S1; S3, smelting the ultrasonically cleaned raw materials in the S2; and S4, casting the tin-lead-indium-gallium alloy prepared in the S3 into alloy ingots. The method is simple and easy to operate.

The invention provides a high-performance automobile oil additive. The high-performance automobile oil additive is prepared from the following raw materials by weight: 7 to 12 parts of base oil, 3 to 4 parts of chlorinated paraffin, 5 to 7 parts of alkyl succinic acid derivative, 4 to 9 parts of boric acid metal salt, 3 to 5 parts of phosphate ester, 6 to 9 parts of calcium stearate, 3 to 7 parts of mineral oil, 4 to 8 parts of polyisobutylene succinimide, 5 to 7 parts of nickle powder, 3 to 6 parts of isobutene adhesive compound, 5 to 7 parts of triolein, 4 to 8 parts of pentaerythritol, 3 to 6 parts of molybdenum dialkyldithiophosphorate, 5 to 7 parts of triphenylphosphorothioate, 8 to 11 parts of fatty alcohol polyoxyethylene ether carboxylic acid, 5 to 7 parts of petroleum sulfonate, 4 to 8 parts of dioctyl primary alkyl zinc dithiophosphate, 1 to 2 parts of petroleum sulfonate, 12 to 22 parts of dimethicone, 4 to 8 parts of boronated polyisobutylene succinimide, 2 to 4 parts of sulfurized calcium alkyl phenolate, 2 to 5 parts of mesembryanthemoidigenic acid and 8 to 14 parts of primary and secondary alkyl zinc dithiophosphate. The automobile oil additive can improve the quality of a lubricant, has excellent antioxidation and antiabrasion performance, exerts good protection effect on automobile equipment and has low cost.

The invention discloses an air negative ion detector. The air negative ion detector comprises a metal casing, wherein the metal casing is coated with a film. The film coating process comprises the following steps of (1) sequentially adding 1 to 2 parts of tetrafluoroethylene-hexafluoropropylene copolymer by weight, 1.8 parts of sodium metasilicate by weight, 2.0 parts of inositol hexaphosphate byweight, and 1.9 parts of sodium dodecyl benzene sulfonate by weight into 50 parts of deionized water by weight, and uniformly stirring; (2) sequentially adding 17.5 parts of bromodiethy carbonate by weight, 10.4 parts of 4-Vinyl-1,3-dioxolan-2-one by weight, 2.0 parts of dodecyl dimethyl betaine by weight, and 0.9 part of benzotriazole by weight, continuing to stir, and fully and uniformly mixing,so as to obtain a film coating treatment liquid; (3) placing the metal casing into the film coating treatment liquid to impregnate, fetching out, and drying. The air negative ion detector has the advantages that the surface of the metal casing is coated with a protection film, the property is good, and the surface finish is high.

The invention provides a nickle-coated copper micrometer sheet of a core-shell structure and a preparation method and application thereof. The method comprises the steps that ethylene glycol and a micrometer copper sheet are mixed, and a reducing agent and nickle salt are added for reaction to obtain the nickle-coated copper micrometer sheet of the core-shell structure, wherein the mass ratio of the micrometer copper sheet to the nickle salt is (7-8) to (1-1).1. According to the method, the ethylene glycol is used as a solvent, and the ethylene glycol can reduce ion diffusion, so that the reaction dynamics are controlled, and a layer of continuous and compact nickle is obtained on the surface of the micrometer copper sheet through electroless deposition; due to a self-limiting growing effect, the nickle layer does not overgrow, the thickness is well controlled, nickle-coated copper still retains the sheet-like morphology with the original high length-width ratio, the original sheet-like structure with the high length-width ratio remains, the nickle-coated copper micrometer sheet of the core-shell structure is obtained, and under protection of nickle, the copper sheet has high oxidation resistance; the nickle layer is compact and thin, so that the nickle-coated copper micrometer sheet has excellent conductivity and thermal stability; the nickle-coated copper micrometer sheet hasgood application prospects in preparation of conductive filler or electromagnetic shielding materials or heat conduction materials.

The invention provides a biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, which is composed of biomass-based activated carbon and iron carbide, wherein iron carbide is distributed in the biomass-based activated carbon and is coated by the biomass-based activated carbon to form micron-sized activated carbon-coated iron carbide particles, and the anode material has a three-dimensional porous network structure consisting of micron and nano composite holes. The invention also provides a microbial fuel cell anode based on the anode material, and preparation methods of the anode material and the anode. According to the invention, the problems of unfavorable attached growth of microorganisms and high modification cost of the existingmodified three-dimensional carbon-based electrode are solved, and the attached growth of an anode biological membrane can be promoted and the electron transfer of an extracellular interface can be accelerated while the cost of the microbial fuel anode is reduced.

The invention provides lycium ruthenicum fermentation broth. The lycium ruthenicum fermentation broth is obtained through fermenting lycium ruthenicum powder, an ethanol solution, aspergillus niger, glucose and purified water. The invention further provides a preparation process of the lycium ruthenicum fermentation broth and application of the lycium ruthenicum fermentation broth in cosmetics. The aspergillus niger for fermentation can produce a lot of enzymes such as proteinase and pectinase; the obtained fermentation broth is high in bioactive micromolecular peptide content and amino acid content and is easily absorbed by skin. By adopting an alcohol-extraction re-fermentation method, products with excellent oxidation resisting, whitening and anti-wrinkle properties can be obtained. Lycium ruthenicum supernatant is obtained by using a fermentation process and can effectively keep bioactivity at low temperature for a long time.

The invention discloses a male skin-care composition containing a growth factor and application thereof. The male skin-care composition is prepared from the following components: a basic fibroblast growth factor, water-soluble fullerene, hydrolyzed rice protein, alpha-mannosan, leucojum aestivum bulb extract and bergamot extract. The water-soluble fullerene is a keratan sulfate oligosaccharide-fullerene C60 compound; the mass percent of fullerene C60 in the water-soluble fullerene is 4 to 8 percent. The skin-care composition disclosed by the invention is designed for male skin and has remarkable effects of moisturizing, controlling oil, resisting ageing, removing wrinkles and the like; the skin-care composition is used for preparing male skin-care products including toner, lotion, facial cream, mask, essence and the like; the market of male skin-care products can be expanded and the increasing man skin-care requirements are met.

The invention relates to a method for preparing a milt-functional metal surface treatment additive containing boride diethanolamine phosphates, which comprises steps: diethanolamine and phosphate esterification agents are added into a reaction kettle to react, are hydrolysed and concentrated to obtain a viscous liquid, a water-carrying agent is added into the viscous liquid, a boriding agent is added to react by stirring, and the water-carrying agent is boiled up by decompressing to obtain a target product. The milt-functional metal surface treatment additive which is prepared through the method comprises 30-60% boride diethanolamine phosphates and 20-60% diethanolamine double phosphate esters. The method for preparing the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates has the beneficial effects that the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates has excellent antifriction, antioxidant, rust-proof and lubrication performance and the like because phosphates which are used as main components in the milt-functional metal surface treatment additive containing the boride diethanolamine phosphates contain active elements such as N, P and B and the like, is strong in anti-hydrolytic property, can improve lubricity and anti-rust property of a water-base metal working fluid by being added into the water-base metal working fluid, also can improve extreme pressure property and prolongs service life of the water-base metal working fluid simultaneously, and is an excellent multi-functional water-soluble additive.

The invention discloses a preparation method of a ultra-wear-resistance binder-free hard alloy, and belongs to the technical field of powder metallurgy. The preparation method comprises the following preparation steps: (1) nanometer WC powder of not more than 100 nm is mixed with micron WC powder of 2-4 microns through ball milling, wherein the nanometer WC powder is 8-12% of the total WC powder; the nanmeter WC powder is pure WC powder; and the micron WC powder is WC powder containing a grain growth inhibitor, 0.5 wt% of Cr3C2 and 0.5 wt% of VC; and (2) the ball-milled mixed powder is put in a graphite mold for hot-pressed sintering; the sintering temperature is 1500-1600 DEG C; the sintering pressure is 30-40 MPa; and the sintering time is 20-30 min. Compared with a traditional preparation process, as the nanometer WC powder is adopted, and is higher in sintering activity, micron WC particles are sintered at a lower temperature through a recrystallization growth mode. The grain growth inhibitor is added in the micron WC powder, so that the grain size of the whole alloy can be controlled, the comprehensive mechanical performance of the alloy is improved, and finally, the wear resistance is greatly improved.

The invention discloses a welding wire flux core material having crack and air hole resisting performance. The welding wire flux core material having the crack and air hole resisting performance consist of raw materials by following weight part: 30-40 parts of rutile, 8-12 parts of reduced titanium, 4-8 parts of fluorite, 3-5 parts of potassium feldspar, 1-2 parts of potassium fluoride, 3-6 partsof rare earth ferrosilicon, 3-5 parts of aluminum magnesium alloy, 3-5 parts of low-carbon ferromanganese, 1-3 parts of metal nickel, 2-3 parts of ferrotitanium, 3-6 parts of cerium oxide and 2-4 parts of bismuth titanate. The welding wire flux core material and a welding wire are suitable for welding of ceramic liners, have the good crack and air hole resisting performance, and can enable structure of deposited metal to obtain fine grain acicular ferrite structure excellent in crack resisting and air hole resisting performance. Meanwhile, weld joint grain structure is purified to obtain goodoxidation resistance and easily separate out the deposited metal impurities, and therefore the deposited metal is enabled to obtain excellent crack resisting and air hole resisting capacity. The welding wire flux core material and the welding wire solve the crack sensitivity and easy air hole generation puzzles which exist in the deposited metal and cannot be solved by common welding materials.

The invention discloses high-strength carbon fiber enhanced aluminum oxide ceramic matrix composite and a preparation method thereof. The high-strength carbon fiber enhanced aluminum oxide ceramic matrix composite is characterized by being prepared from raw materials in parts by weight as follows:60-70 parts of aluminum oxide, 10-13 parts of modified high-elastic carbon fiber, 3-5 parts of boron nitride, 3-4 parts of lithium oxide, 5-8 parts of acrylic acid-2-hydroxy ethyl ester, 0.03-0.06 parts of cyclohexanone peroxide, 3-4 parts of a chitosan-acetic acid solution, 0.3-0.5 parts of a crosslinking agent TAIC, 10-15 parts of anorthite, 2-3 parts of sodium hexametaphoshpate, 20-30 parts of ethanol and 40-60 parts of deionized water. With modified high-strength carbon fiber as an enhancing phase, the high-strength carbon fiber enhanced aluminum oxide ceramic matrix composite has the advantages of excellent oxidation resistance, improvement of ceramic toughness and strength, high-temperature and low-temperature resistance, good thermal conductivity and small expansion coefficient; added anorthite can reduce drying shrinkage and deformation of a blank body, the drying performance is improved, the drying time is shortened, accordingly, the blank body is compact, void is reduced, and the mechanical strength and the dielectric property are improved.

The invention relates to the technical field of animal food processing, and specifically relates to a cod skin collagen peptide having an antioxidant and immune-enhancing function, and a preparation method thereof. The preparation method of the provided cod skin collagen peptide includes the following steps: taking cod skins as a raw material, and performing two-step enzymolysis on the pre-treated raw material to obtain enzymatic hydrolysate, wherein in the two-step enzymolysis, the enzyme used in first step enzymolysis is compound protease, and the compound protease is trypsin and neutral protease; and the enzyme used in second step enzymolysis is flavourzyme. Thecollagen peptide obtained by the preparation method has high small molecule peptide content, and has an excellent antioxidant and immune-enhancing function.

The invention discloses a method for preparing a black tungsten carbide composite coating through a physical vapor deposition method. The method comprises the following steps of oil removal and cleaning, bottom layer preparation, transition buffering layer preparation, hardening wear-resistant film layer preparation, color layer preparation and cooling and discharging, wherein the oil removal andcleaning step comprises the following steps of carrying out soaking and cleaning in a common oil removal and cleaning agent solution, carrying out ultrasonic cleaning in alcohol, carrying out slowly pulling and dehydrating in ultrapure water with the temperature of 100 DEG C and carrying out baking. According to the step design of the process, the black tungsten carbide composite coating preparedthrough the method for preparing the black tungsten carbide composite coating through the physical vapor deposition method has the advantages of being high in corrosion resistance and good in anti-oxidation property, and capable of well meeting the daily use of products and prolonging the service lift of the products.

The invention discloses a cordyceps sinensis and cordyceps militaris extracting solution, and a preparation method thereof. The preparation method comprises following steps: cordyceps sinensis and cordyceps militaris are grinded into powder and sieved respectively, and are immersed in water of 38 to 42 DEG C for 9 to 11h of stirring respectively so as to obtain a cordyceps sinensis medicine liquid and a cordyceps militaris medicine liquid, wherein the weight amount of water used for immersing cordyceps sinensis accounts for 18 to 22 times of that of cordyceps sinensis, and the weight amount of water used for immersing cordyceps militaris accounts for 18 to 22 times of that of cordyceps militaris; the obtained cordyceps sinensis medicine liquid and the obtained cordyceps militaris medicine liquid are filtered respectively, and the obtained filtrates are diluted until medicine liquid concentration ranges from 0.045 to 0.055g/ml, and are filtered so as to obtain a cordyceps sinensis extract and a cordyceps militaris extract respectively; and the cordyceps sinensis extract and the cordyceps militaris extract are mixed at a mass ratio of 1:1-5 so as to obtain the cordyceps sinensis and cordyceps militaris extracting solution. The preparation method is simple; operation is convenient; and production cost is reduced. The obtained cordyceps sinensis and cordyceps militaris extracting solution possesses better whitening and antioxidant effects than that of cordyceps sinensis and cordyceps militaris, and at the same time, skin cell proliferation is not stimulated. The cordyceps sinensis and cordyceps militaris extracting solution can be processed into different products, and can be widely applied to medicines, health care products, food, and cosmetics.

The invention discloses a pavement moisture permeameter which comprises a metal housing, wherein the metal housing is subjected to filming treatment; the filming treatment comprises the following steps: 1) sequentially putting 2-3 weight parts of an acrylic resin, 3.0 weight parts of diethyl bromide carbonate, 1.5 weight parts of polymerized flax seed oil, 0.7 weight part of a high chlorinated polyethylene resin into 50 weight parts of deionized water, and stirring uniformly; 2) further sequentially adding 11.0 weight parts of vinyl ethyl carbonate, 8.0 weight parts of hydroxy propyl methylcellulose, 1.8 weight parts of isocaprylic acid and 1.2 weight parts of a borosilicate glass material, continuously stirring till sufficient and uniform mixing so as to obtain a filming treatment solution; 3) putting the metal housing into the filming treatment solution, taking out, and baking. The surface of the metal housing of the pavement moisture permeameter is covered by a protection film, sothat the pavement moisture permeameter is good in performance and high in surface smoothness.